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    <title>Document</title>
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<body>
    <script>
        function Person(name,sex,age){
            this.name = name;
            this.sex = sex;
            this.age = age;
            this.sayHi = function fun(){
                console.log("hello");
            }
        }
        var p1 = new Person("zs",true,28);
        console.log(p1);
                                                                   
    </script>
</body>
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